A huge gap here, bringing us closer to the present. Now working on some rangefinder electronics.
Originally Posted 27-July-2009
I haven't posted anything in ages because I've been away (doing an Architecture degree)
But now I'm back and have got thoroughly stuck into making my rangefinder.
First of all I purchased a metronome kit from Maplin as well as some green LEDs.
As soon as I got the kit I assembled it according to the instructions and then began to sync the lights up to the right speed (2.13 Hz), by adjusting the two pots to 40KΩ each.
That was fairly easy and formed the basis for my rangefinder circuitry.
Next I desoldered the 9v clip, the LEDs and the capacitors. I re-soldered the capacitors, leaving longer leads so I could fold them down flat.
I had to extend the leads of the LEDs, this was fairly simple, I just soldered on some short lengths of wire and added heat shrink tubing.
I then re-soldered these longer LED's into place.
Also I filed off the unused areas of the board.
Until I could scavenge another resistor (maplin only sell them in massive sets) I'm leaving the circuitry here.
Total spend is now £9.58.
- Large card for main helmet & mask : £2.00
- Pint o' PVA Glue : £3.00
- Metronome kit : £3.99
- Superbright green LED : £0.59